Polishing tool



June S 29261 1,587,843

P. KORENEFF POLISHlNG TOOL Filed May 19A 1925 2?/ Sh@erts-Sheat-l l INI/ENTOR.

- v ATTORNEY.

June 8,1926. l 1,587,843

, P. KORENEFF POLISHNG TOOL Filed May 19, 1925 Z Sheets-Sheet 2 Patented J une 8,v 192,6.

UNITED STATES PHILIIPP KOBENEFF, 0F SAN FRANCISCO, CALIFORNIA.

POLISHDIG TOOL.

Application iled lay 1.9, 1925. Serial No. 31,455.

This invention relates to a polishing tool, adapted to be applied to, and operated by, a flexible shaft. The polisher is especially intended to be capable of use in connection with furniture, automobiles, or other painted work polishing, where it is necessary to polish curved, or rounded, surfaces.

With the foregoing objects in'view, the

olishing head proper consists of a flat flex- 1ble sheet of mater1al, which acts as a support for the flat flexible abrasive material olding disks, and the workman applies his hand to the fixed flexible disk to bend it into a shape to properly smooth the rounded surfaces that may be treated.

Other objects of the invention will appear as the description prs An embodiment of the invention is shown in the accompanying drawings, in which the ,same reference numeral is applied to the same portion throughout, but I am aware that there ma be modifications thereof.

Fig. 1 is a side elevation of an electric motor to which this inventionhas been a plied. Fig. 2 is a sectional view of the a rasive holdin disk, and the cou ling for securing it to t e en d of the flexi le shaft.v

Fig. 3 is a plan view of the polishing element and couplin shownjn F1 2, y Fig. 4 is asi e elevation o -a modified 'form of the invention, in which the rotary member carries a flexible member with a se ries of rollers thereon to aid in reducing the friction when in operation.

Fi 5 is a side elevation of: a flexible rag polis er, showing the application thereto of a secondary handle for 'aiding in holding the polishing wheel.

. Fig- 6 is a sectional View of a polishing head slightly modified in type.

Fig. 7 is a plan view of the polishing head shown in Fig. 6. v,

Fig. 8 is a lan view of one of the fabric abrasive mem 'ers used in connection with the form of the invention shown in any of the figures.

The numeral 1 indicates an electricy motor, or any. other form of motor, to which the flexible tube 2, with the flexible shaft 3, therein, may be secured said flexible tubehaving a convenient hand grip 4 at its outer end. The hand 'p 4 has a driving connection on the end o the flexible shaft 3, to which the rotating parts are connected by means of a. threaded stud 6, with a flat head 7.

' the plate 17,

The hand grip'4 is flared outwardly and threaded to receive a flanged fitting 8, and said flanged fitting 8 is also internall threaded to receive a flanged collar r9, whic collar bears upon the center portion 10, of a flexible disk 11 whereby said flexible disk is held in a fixed position with respect to the handle 4*.4 Y

The stud 6 is internally threaded to receive a screw 12, secured to a flat disk 13. The disk 13, (aswell as the other threaded members) may be rovided with a pair of holes 14, 15, to enale it to be rotated with a s `ial tool, or a suitable socket wrench may be used to tighten i-t against the flange 7. Two flexible disks 16,17, aresecured between the flange 7 and the plate 13 by turning the screw 12 into the opening in the end of the stud 6.

Ordinarily, a flat piece of sandpaper, or cloth, such as is shown in Fi 8, is used over and has`l its en s tucked under so that the head 13 tightly secure the sandpaper disk, so that it willappear as shown at 18, in Fig.'3.

In operation the workman holds the han-v dle 4 m his hands, and places his fingers upon the disk 11, bending it to suit the curved piece of material he desires to polish, as the flexible shaft rotates the two disks 16 and 17, which with the piece of sandpaper are eually flexible, with the shaft drivin the isks 11, 16 and 17 the result is that e sandpaper will change form and will pass over curved surfaces, and will polish them equally well with perfectly plain surfaces.V

The device may take the form shown in Fig. 4, in whichl the fixed member 20, forms the hand gri and into which a shaft 21 extends from e flexible shaft 3. rlfhe mem.- ber 20 is threaded to receive the threaded shank 22 of a disk 23, and a flexile disk 24 has a central stud 25, carryin flexible rods 26 tosu port a series of rol ers 27 to enable the 24 to be" rotated with less friction. The disk 24 may have a piece of sandpaper attached to it, or may itself be covered with abrasive material secured thereto by glue, or otherwise.

' In Fig. there is shown a cloth polishing roll 30, which is turned by a shaft 31, on the ends of which there is a short stub shaft 32, adapted to be received by, the shank 33 of a handle 34.

and turned in, i 11o In Figs. 6 and 7, the hand grip portion of the polisher is shown at 40, and 1t has the member 41 connected to the flexible shaft 3. The member 40 is adapted to receive the threaded hub 42 on a plate 43, the latter plate having a plurality of radially extending cuts to make it more flexible. As in the form of the invention shown in Fig. 2, the members. for holding thev abrasive material consist of two fiat flexible members 44, 45, the latter with a centrally threaded stud 46 tp1 secure it and the member 44 to the fiexible s aft.

It will be seen that the disk 43'is provided with a series of cuts 43 extending radially toward the center, the object being to give greater flexibility to said disk 43, while at the same time its outer edge is curved over as indicated at 43" to prevent it from scratching surfaces in process of being smoothed.

In Fig. 8 is shown a common form of abrasive 50, whether of cloth, paper or other suitable material, to which the abrasive may be applied, as is done in thecase ofI sandpaper, or which may simply be using an abrasive such as pumice against the surface to be smoothed. Y

This sheet of material has four tail pieces, 51, 52, 53 and 54, or it may have any number of tail pieces extending therefrom, which tail ieces can be tucked under and between the exible members 16, 17 or 44, 45, and they are long enough to pass over the central members 12 or 46, to secure the abrasive member in place.

In operation, the workman takes hold of the hand grip 4, 20 or 40, as the case may be, and by pressing upon the fixed members 11, 23 or 43, causes the abrasive surface to fit itself to any curve that ymay require polishing, and at the same time as the abrasive is rotated, it assumes the same curve as the curve of the fixed member, and as the fixed member, and rotary members are very smooth, there is no undue friction against the fixed member.

What I claim is as follows, but modifications may be made in carrying out the invention shown in the drawings, and in the above particularly described form thereof, within the purview of the claims herein.

1. In a polishing mechanism, a revoluble shaft, a hand grip through' which said shaft operates, a flexible disk carried by said hand grip, and a flexible disk abrading mechanism secured to the revoluble shaft.

2. In an article of the class described a revoluble shaft, a hand grip through which the shaft operates, a fixed flexible disk carried by said hand grip, a air of revoluble flexible disks adjacent the xed disk, a sheet of abrasive material and means to secure the corners of the sheet of abrasive material between the revoluble disks and to the revoluble shaft, whereby the abrasive material may be rotated.

3. In an article of the class described, the combination of a revoluble shaft, ahand grip through which the shaft may be` o erated, a pair of threaded collars, a fixed exible disk secured to said hand grip by said collars, a pair of flexible disks adapted to rotate adjacent the fixed disks, and a sheet of abrasive material having means whereby a screw may be used to secure the two revo- .luble disks and said disk `of abrasive material to the revoluble shaft whereby surfaces may be polished.

f 4. An article of the class described, comprising a revoluble shaft, a hand grip through which the shaft may operate, a air of threaded sleeves, a fixed disk secure to said hand grip, a pair of revoluble disks, and means to secure said revoluble disks to each other and to secure a sheet of abrasive material thereto, whereby the disks and abrasive material may' be rotated to polish given surfaces.

In testimony whereof I have hereunto set my hand this 8th day of May A. D. 1925.

PHILIPP KOREN EFF. 

